Finding the Fourth Proportional to 2,689.75, 4,025.98 and 1,437.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,689.75 : 4,025.98 = 1,437.21 : x
2. Step 2: Convert to fraction form
   2,689.75/4,025.98 = 1,437.21/x
3. Step 3: Cross multiply
   2,689.75x = 4,025.98 × 1,437.21
4. Step 4: Simplify right side
   2,689.75x = 5,786,178.72
5. Step 5: Solve for x
   x = 5,786,178.72/2,689.75
6. Step 6: Final answer
   x = 2,151.20